I bought a new blackberry 8310 from AT&T last week. However, there is a problem about receiving my school email. BB does not get my school email around 6 hours later. My gmail and yahoo accounts work fine. Another thing is that when I use IE to login or outlook express to access my school email account in any computer, even iphone, I can get email from BB immediately. I tried to wipe the phone, delete and add email account both through curve and my laptop. Nothing works. I checked BIS advance setting of my school IMAP server. It is right.

I called my school tech support and they have no idea. They also told me that there is no one reporting this kind problem to them.